warzone2100: fix -latomic

srcpkgs/warzone2100/template

@@ -18,6 +18,16 @@ distfiles="https://github.com/Warzone2100/${pkgname}/releases/download/${version
 checksum=3368f6653a5ebe5579938f0ebbcfe7907b1f0fc635f0a7aecc5d68ebc50124b5
 nocross="fails to detect SDL2 when cross-compiling"
 
+if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
+	makedepends+=" libatomic-devel"
+fi
+
+post_extract() {
+	if [ "$XBPS_TARGET_NO_ATOMIC8" ]; then
+		echo "target_link_libraries(warzone2100 atomic)" >> CMakeLists.txt
+	fi
+}
+
 warzone2100-data_package() {
 	short_desc+=" - data files"
 	pkg_install() {